North Pole South Pole antipodal points antipodes antipoints antipoles arc lighting brouillon cartoon charcoal charcoal drawing chiaroscuro contraposita contrapositives contraries contrast counterpoles crayon decorative lighting delineation design diagram direct lighting doodle draft drafting drawing ebauche electric lighting enlightenment esquisse festoon lighting floodlighting fluorescent lighting gaslighting glow lighting graph highlights illumination incandescent lighting indirect lighting irradiation light and shade lighting line drawing night and day opposite poles opposites overhead lighting pastel pen-and-ink pencil drawing polar opposites poles radiation rough copy rough draft rough outline silhouette silver-print drawing sinopia sketch sketching spot lighting stage lighting strip lighting study tonality tracing vignette writing